It's not generally seen as awful, but in comparison to the first two, it is a massive drop off, which is admittedly a very very high bar.

But it also suffers from coming out 20ish years after the first two, which were made more or less back-to-back, so they really feel like one full piece.

I am interested to see the new Coda re-edit, because I do think that it works best as an epilogue, and not something that's supposed to be a full 1/3 or 33% of the total picture on equal footing with the first two, and from my understanding, that's the direction Coppola goes with this newer edit.